Year	Percent
1950	9.97003
1955	9.92288
1960	9.85364
1965	9.66226
1970	10.03161
1975	10.16873
1980	10.08677
1985	10.13276
1990	10.95909
1995	10.48717
2000	10.35041
2005	10.06246
2010	10.24737
2015	10.58422
2020	10.85061
2025	10.85374
2030	10.69944
2035	10.44572
2040	10.33452
2045	10.22097
2050	10.03712
2055	9.76008
2060	9.44629
2065	9.12286
2070	8.81539
2075	8.52249
2080	8.23089
2085	7.95438
2090	7.68449
2095	7.43339
2100	7.19483